My colleague at work was off to have her swine flu jab today so was questioning me about the side effects. Fortunately the wonderful David McCandless and his Information is Beautiful website came to the rescue. I was able to point out that the side effects included a sore arm, muscle aches, headache, a general feeling of being under the weather... and then pointed out that they were also the side effects you got from the placebo! In fact as David's chart above shows, you actually have less chance getting a headache from the jab than you do from the placebo. Since my colleague is prone to headaches, the idea that the jab might actually prevent her getting headaches quite appealed! Just call me Dr Cleaver!